... 50mm) material carbon steel, special carbon steel, Q235,Q345,X46,X60,X70,X80 The equipment can change mould quickly and simply,produce wide ... 3m to 12.5m,steel grade could be simple carbon steel,special type steel and low alloy steel ,the steel grade could be up ... Coal Water Slurry pipeline, and construction pipe for high voltage, wind power, bridges, high-speed rail steel construction etc. www. ...